136863686 has 8 divisors (see below), whose sum is σ = 207328464. Its totient is φ = 67754200.

The previous prime is 136863677. The next prime is 136863721. The reversal of 136863686 is 686368631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 136863686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338570 + ... + 338973.

It is an arithmetic number, because the mean of its divisors is an integer number (25916058).

Almost surely, 2^136863686 is an apocalyptic number.

136863686 is a deficient number, since it is larger than the sum of its proper divisors (70464778).

136863686 is a wasteful number, since it uses less digits than its factorization.

136863686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677646.

The product of its digits is 746496, while the sum is 47.

The square root of 136863686 is about 11698.8754160389. The cubic root of 136863686 is about 515.3426393617.

The spelling of 136863686 in words is "one hundred thirty-six million, eight hundred sixty-three thousand, six hundred eighty-six".